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Effects of pruning on the apple tree: from tree architecture to modeling

Damien Fumey 1, 2, 3 Pierre-Eric Lauri 3, 2 Yann Guédon 1, 2 Christophe Godin 1, 2 Evelyne Costes 2, 3
1 VIRTUAL PLANTS - Modeling plant morphogenesis at different scales, from genes to phenotype
UMR AGAP - Amélioration génétique et adaptation des plantes méditerranéennes et tropicales, INRA - Institut National de la Recherche Agronomique, CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : Arboricultural practices such as pruning, artificial bending or fruit thinning are crucial interventions in orchard management and are used for controlling tree size, penetration of light into the canopy and the equilibrium between vegetative and reproductive growth. The aim of this project is to explore the possibility of integrating such practices in a model of apple tree development. To this end we designed field experiments to study the effects of pruning (thinning or heading cuts) on two apple cultivars with contrasted architecture, ?Fuji? and ?Braeburn?. The results of these first experiments showed that the studied cultivars had significantly different reactions to pruning: ?Braeburn? trees were penalized more than ?Fuji? trees in terms of the total number of internodes despite the fact that a greater number of internodes had developed. Thinning cuts of laterals tended to be compensated by an increase in lateral branching. Results also indicated that trees which had been pruned tended to develop trunks with similar number of internodes than control trees (which were not pruned). These experiments constitute a first step for assessing the rules underlying tree responses to pruning, which will be further integrated in a model of growth.
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  • HAL Id : hal-00838833, version 1

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Damien Fumey, Pierre-Eric Lauri, Yann Guédon, Christophe Godin, Evelyne Costes. Effects of pruning on the apple tree: from tree architecture to modeling. 9th International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems, 2008, Geneva, New York, United States. ⟨hal-00838833⟩

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